package com.edu.service;

import com.edu.bean.User;

import java.util.List;

public interface UserService {
    int addUser(User user);
    int deleteUser(int userId);
    int updateUser(User user);
    User selectUserById(int userId);
    List<User> selectAllUser();
    int transferMoney(int userId1,int userId2,double money);
}
